[INFO] cloning repository https://github.com/z78078/squeeze
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/z78078/squeeze" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fz78078%2Fsqueeze", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fz78078%2Fsqueeze'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 733ca496a89875c851f35eacca097be2b33b4b1e
[INFO] testing z78078/squeeze against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fz78078%2Fsqueeze" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/z78078/squeeze on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/z78078/squeeze
[INFO] finished tweaking git repo https://github.com/z78078/squeeze
[INFO] tweaked toml for git repo https://github.com/z78078/squeeze written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate git repo https://github.com/z78078/squeeze already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97d7934a59d0275e589603bdb2e62fe02799720311714f8a1f5d63096b75d019
[INFO] running `Command { std: "docker" "start" "-a" "97d7934a59d0275e589603bdb2e62fe02799720311714f8a1f5d63096b75d019", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97d7934a59d0275e589603bdb2e62fe02799720311714f8a1f5d63096b75d019", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97d7934a59d0275e589603bdb2e62fe02799720311714f8a1f5d63096b75d019", kill_on_drop: false }`
[INFO] [stdout] 97d7934a59d0275e589603bdb2e62fe02799720311714f8a1f5d63096b75d019
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 605ef2d1bd29df2f7c395a4a966d23d8e859ba77acffde5a4fd20b5dcc2671b4
[INFO] running `Command { std: "docker" "start" "-a" "605ef2d1bd29df2f7c395a4a966d23d8e859ba77acffde5a4fd20b5dcc2671b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v3.0.14
[INFO] [stderr]    Compiling squeeze v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::Compressor`
[INFO] [stdout]  --> src/compressor/lz77.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::Compressor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> src/model.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Compressor`, `huffman::HuffmanCompressor`
[INFO] [stdout]  --> src/model.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::compressor::{Compressor, huffman::HuffmanCompressor}; 
[INFO] [stdout]   |                         ^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration`, `Instant`
[INFO] [stdout]  --> src/model.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                 ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.70s
[INFO] running `Command { std: "docker" "inspect" "605ef2d1bd29df2f7c395a4a966d23d8e859ba77acffde5a4fd20b5dcc2671b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "605ef2d1bd29df2f7c395a4a966d23d8e859ba77acffde5a4fd20b5dcc2671b4", kill_on_drop: false }`
[INFO] [stdout] 605ef2d1bd29df2f7c395a4a966d23d8e859ba77acffde5a4fd20b5dcc2671b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 393523fb7efcacee1398fae013c94b1b6edc4e878d79f2e9cad093940e25604e
[INFO] running `Command { std: "docker" "start" "-a" "393523fb7efcacee1398fae013c94b1b6edc4e878d79f2e9cad093940e25604e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: unused import: `super::Compressor`
[INFO] [stdout]  --> src/compressor/lz77.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::Compressor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> src/model.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Compressor`, `huffman::HuffmanCompressor`
[INFO] [stdout]  --> src/model.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::compressor::{Compressor, huffman::HuffmanCompressor}; 
[INFO] [stdout]   |                         ^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration`, `Instant`
[INFO] [stdout]  --> src/model.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                 ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling squeeze v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Compressor`
[INFO] [stdout]  --> src/compressor/lz77.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::Compressor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> src/model.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Compressor`, `huffman::HuffmanCompressor`
[INFO] [stdout]  --> src/model.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::compressor::{Compressor, huffman::HuffmanCompressor}; 
[INFO] [stdout]   |                         ^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration`, `Instant`
[INFO] [stdout]  --> src/model.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                 ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.96s
[INFO] running `Command { std: "docker" "inspect" "393523fb7efcacee1398fae013c94b1b6edc4e878d79f2e9cad093940e25604e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "393523fb7efcacee1398fae013c94b1b6edc4e878d79f2e9cad093940e25604e", kill_on_drop: false }`
[INFO] [stdout] 393523fb7efcacee1398fae013c94b1b6edc4e878d79f2e9cad093940e25604e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 36c7877f31d1608197067f0c2208b425def9c0a59547506043e370df0eb6394b
[INFO] running `Command { std: "docker" "start" "-a" "36c7877f31d1608197067f0c2208b425def9c0a59547506043e370df0eb6394b", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `super::Compressor`
[INFO] [stderr]  --> src/compressor/lz77.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::Compressor;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> src/model.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Compressor`, `huffman::HuffmanCompressor`
[INFO] [stderr]  --> src/model.rs:2:25
[INFO] [stderr]   |
[INFO] [stderr] 2 | use super::compressor::{Compressor, huffman::HuffmanCompressor}; 
[INFO] [stderr]   |                         ^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Duration`, `Instant`
[INFO] [stderr]  --> src/model.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::time::{Duration, Instant};
[INFO] [stderr]   |                 ^^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `squeeze` (lib) generated 4 warnings
[INFO] [stderr] warning: `squeeze` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/squeeze-b5a839553ebc917f)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test compressor::huffman::tests::symbol_frequency_table ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/squeeze-bdc4e29a37de5d1f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/compressors_test.rs (/opt/rustwide/target/debug/deps/compressors_test-f914bc7b00c575b6)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test text_compression_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.04s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests squeeze
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "36c7877f31d1608197067f0c2208b425def9c0a59547506043e370df0eb6394b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36c7877f31d1608197067f0c2208b425def9c0a59547506043e370df0eb6394b", kill_on_drop: false }`
[INFO] [stdout] 36c7877f31d1608197067f0c2208b425def9c0a59547506043e370df0eb6394b